I too was wondering where they had gone, then I found
this thread on the "Sergent's Mess" section - It will direct you to canadiansoldiers.com where you will find some reasons for the dissapearance of the reports and a link to a web archive on the "wayback machine" website.
R.E. Field Park Coy - "held a reserve of equipment, stores & Skilled men" more information (British 1944/45, but Canadian would be almost identical)
here